Home / 3,947.43-5,447.37-2,179.02

Finding the Fourth Proportional to 3,947.43, 5,447.37 and 2,179.02

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Solution

The fourth proportional to 3,947.43, 5,447.37 and 2,179.02 is: 3,007.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.43 : 5,447.37 = 2,179.02 : x
  2. Step 2: Convert to fraction form
    3,947.43/5,447.37 = 2,179.02/x
  3. Step 3: Cross multiply
    3,947.43x = 5,447.37 × 2,179.02
  4. Step 4: Simplify right side
    3,947.43x = 11,869,928.18
  5. Step 5: Solve for x
    x = 11,869,928.18/3,947.43
  6. Step 6: Final answer
    x = 3,007.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.